Novo Nordisk A/s

Nna/s

Henrik Ljunggreen

Lars Hofmann Christensen

Jens Ulrik Poulsen

Jens Aage Munk

Lars Peter Klitmose

Thomas Buch-Rasmussen

Jens-Ulrik Poulsen

Denmark Denmark Aasmul

Soren Aasmul

Henning Munk Ejlersen

So Slashedren Mikkelsen

Jens Moller-Jensen

Preben Broskov Nielsen

Anders Heger

Jens Mo slashedller-Jensen

Jens M&oslash;ller-Jensen

Peter M&oslash;ller-Jensen

Jens Mo Jensen

Peter Moller-Jensen

The present invention relates to a transfer device for transferring medicament from a medicament container to a syringe with a needle. The transfer device is arranged for transferring accurate dosages of insulin, growth hormone or other medicaments. The accuracy is ensured by the device comprising means for mounting a syringe to the device, the needle piercing a sealing of the device. Opposite the sealing a piston is arranged, said piston being non-releasable engaged with the piston driver during transfer of the medicament. Thereby the piston is not erroneously drawn from the piston driver, which would otherwise lead to incorrect dosing. Furthermore, the device comprises dosing means including the piston driver.

Medicament transferring device

Described is an electronic injection device wherein an electronic circuit is designed to work in two alternative modes: an air shot mode and a dose injection mode. When working in the air shot mode a small predetermined air shot dose is pressed out from the ampule when the injection button is actuated. When working in the injection mode, a dose set by operation of the dose setting means is injected by operation of the injection button. The electronic injection device is normally working in the air shot mode but shifts to work in the dose injection mode when it receives a signal indicating that the dose setting means has been operated. The circuit returns to its air shot mode when receiving a signal indicating that the set dose has been injected. This signal can originate either from a switch indicating that the protection cap is mounted or from a switch indicating that the injection button has been pressed.

Air shot mechanism for electronic injection devices

A drug delivery device comprising a housing ( ) with a drug container ( ) being provided with delivering means comprising a piston ( ) for expelling a drug ( ) from the drug container ( ). The housing ( ) further comprising a displaceable piston rod ( ) abutting the piston ( ) of the drug container ( ) and rotating means being in engagement with the piston rod ( ), said rotating means being provided with a one-way mechanism. The one-way mechanism comprises a helical spring ( ) wound tightly around an axle ( ), one end of said helical spring ( ) being fixed in relation to the housing ( ), the other end of the helical spring ( ) being in a free state.

Drug delivery device provided with a one-way mechanism

A flexible piston rod for an injection device, which piston has the form of a helical spring made from a number of narrowly adjacent turns of windings. These turns provide an external thread fitting into the internal thread of a nut element. When the nut element is rotated, the piston rod is advanced forward, which movement is used to displace a piston inside a cartridge containing a fluid to be expelled. In order to prevent the piston rod from rotating when the nut element is rotated, the helical spring making up the piston rod is provided with a longitudinal spine, which is located at a peripheral area of the helical spring.

Flexible piston rod

The present invention relates to a drug delivery device wherein a dose to be apportioned from a cartridge is set by changing the relative position of co-operating dose setting elements ( ) and is injected by pressing a button ( ) until this button abuts a stop ( ). By operation of count up ( ) or count down ( ) buttons the dose is set and read into an electronic circuit ( ) comprising a microprocessor and the dose setting movement of the dose setting elements relative to each other is performed by a motor ( ) controlled by the circuit in accordance with the read in dose. The set dose is shown on a display ( ). The motor ( ) is further controlled to perform certain movements of the piston rod ( ) so as retraction of this rod when a cartridge ( ) is going to be changed an advancing of the piston rod to abutment with the piston ( ) after the cartridge has been changed and further to advance this piston to expel air from the cartridge.

Dose setting device

The invention concerns an apparatus for the registration of the setting of a medical device, the setting of which implies a mechanical adjustment of at least two relatively moveable elements of the device. The invention is characterized in that the apparatus is intended for disconnectible engagement with the medical device, and that it has detector means for detecting the mechanical adjustment and has information means arranged for providing information related to said mechanical adjustment.

Apparatus for the registration of the setting of a medical device

The present invention relates to a drug delivery system, comprising a reservoir from which set doses are apportioned, a dose setting mechanism by which the relative position of two elements is changed by a distance proportional to a set dose, and a push button by activation of which an element is moved a distance corresponding to the distance proportional to the set dose, further comprises a working cylinder having an open end into which a plunger fits, and a closed end at which an inlet and an outlet port connect the space beneath the plunger with an inlet communicating with the reservoir and an outlet communicating with a drug delivery member, respectively. Valves means at the inlet and outlet control the passages from the reservoir to the working cylinder and from the working cylinder to the drug delivery member, respectively. The cylinder with the plunger, and the injection member are independently exchangeable, disposable parts.

Working cylinder

Displacement system for controlled infusion of a liquid

The present invention relates to a drug delivery device wherein a dose to be apportioned from a cartridge is set by changing the relative position of co-operating dose setting elements (3, 5) and is injected by pressing a button (5) until this button abuts a stop (6). By operation of count up (7) or count down (8) buttons the dose is set and read into an electronic circuit (9) comprising a microprocessor and the dose setting movement of the dose setting elements relative to each other is performed by a motor (11) controlled by the circuit in accordance with the read in dose. The set dose is shown on a display (10). The motor (11) is further controlled to perform certain movements of the piston rod (3) so as retraction of this rod when a cartridge (1) is going to be changed an advancing of the piston rod to abutment with the piston (2) after the cartridge has been changed and further to advance this piston to expel air from the cartridge.

Growing community of inventors

Ballerup, Denmark

Henrik Ljunggreen